Remote sensing and its kindred technologies, such as geographic information systems (GIS) and the Global Positioning System (GPS), are having a pervasive impact on the conduct of sciences, government, and business alike. This book is designed as a reference tool for the burgeoning number of practitioners who use geospatial information and analysis in their work. Rapid advances in computational power and sensor design are allowing remote sensing and its kindred technologies, such as geographic information systems (GIS) and the Global Positioning System (GPS), to play an increasingly important role in science, engineering, resource management, commerce, and other fields of human endeavour. Because of the wide range of academic and professional settings I which this book might be used, we have made the discussion “discipline neutral”. That is, rather than writing a book heavily orientated toward a single field such as business ecology, engineering, forestry, geography, geology, urban and regional planning, or water resource management, we approach the subject in such a manner that students and practitioners in any discipline should gain a clear understanding of remote sensing and their virtually unlimited applications. In short, anyone involved in geospatial data acquisition and analysis should find this book to be a valuable text and reference.